package com.example.gok_mall.constUtil;

import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

import java.util.Date;

public class DateTimeUtil {
    //joda-time
    //str->date
    //date->str

    //定义时间格式
    public static final String STANDARD_FORMAT="yyyy-MM-dd HH:mm:ss";

    public  static Date strToDate(String dateTimeStr,String formatStr){
        DateTimeFormatter dateTimeFormatter=DateTimeFormat.forPattern(formatStr);
        DateTime dateTime=dateTimeFormatter.parseDateTime(dateTimeStr);
        return dateTime.toDate();
    }

    public static String dateToStr(Date date,String formatStr){
        if(date==null){
            return StringUtils.EMPTY;
        }
        DateTime dateTime=new DateTime(date);
        return dateTime.toString(formatStr);
    }


    /**
     *
     * @param  dateTimeStr  具体时间
     * @STANDARD_FORMAT     时间格式
     * @return
     */
    public  static Date strToDate(String dateTimeStr){
        DateTimeFormatter dateTimeFormatter=DateTimeFormat.forPattern(STANDARD_FORMAT);
        DateTime dateTime=dateTimeFormatter.parseDateTime(dateTimeStr);
        return dateTime.toDate();
    }

    public static String dateToStr(Date date){
        if(date==null){
            return StringUtils.EMPTY;
        }
        DateTime dateTime=new DateTime(date);
        return dateTime.toString(STANDARD_FORMAT);
    }

   /* public static void main(String[] args) {
        System.out.println(DateTimeUtil.dateToStr(new Date(),"yyyy-MM-dd HH:mm:ss"));
        System.out.println(DateTimeUtil.strToDate("2016-02-09 11:45:28","yyyy-MM-dd HH:mm:ss"));
    }*/
}
